KNG P150 Owner’s Manual 8
MIXED MODE OPERATION
The receiver and transmitter are capable of operating in analog wide-
band (25 kHz channel spacing), analog narrow-band (12.5 kHz channel
spacing) and APCO Project 25 Digital Mode.
Each channel’s Receive and Transmit Mode can be set independently
as follows:
Mode RX
TX
Analog Receive
qualified
analog signals
only
Transmit analog
signals only
Digital Receive
qualified
digital signals
only
Transmit digital
signals only
Mixed Automatically
receive qualified
analog or digital
signals
Transmit analog or
digital signal,
depending on the
status of ‘TX
Digital’ soft switch.
Digital receptions and transmissions will be indicated by illuminating
the ‘
D
’ annunciator in addition to the ‘
RX
’ or ‘
TX
’ annunciator.
MIXED MODE TALKBACK
If Mixed Mode Talkback is enabled, transmissions initiated while hold
time remains will be in the same mode as the received signal, if the
signal was received on the Ready to Transmit (RTX) channel.
Depending on programming, the RTX channel can be the main
channel, a held scan or priority channel if Talkback Scan is enabled, or
the Priority 1 channel if TX on PR1 is enabled. TX Mode on the RTX
channel must be set to
MIXED
.
While hold time after a reception remains, transmissions will be in the
same mode as the received signal, regardless of the status of the ‘TX
Digital’ soft switch. As in Talkback Scan, the RTX channel and receive
annunciators will be displayed for the duration of the timer.
The talkback timer can be cleared by making the held channel invalid.
For instance, if a scan channel is being held, turn scan off.
13 BK Radio
UNIT-TO-UNIT CALL
P25 Unit IDs allow for Unit-To-Unit calls when the radio is operating in
Digital Mode. To view the radio’s ID, press and hold the
U2U
button
while not in Unit-To-Unit Mode. (Unit-To-Unit Mode is indicated by a
phone icon in the upper right corner of the display). Channels
programmed for analog only operation will not be able to transmit or
receive Unit-To-Unit calls.
UNIT-TO-UNIT MODE
When the radio is in Unit-To-Unit Mode, all scanning functions will be
disabled. The radio will receive and transmit on the Ready-to-Transmit
(RTX) channel only. Depending on programming, the RTX channel
can be the main channel, a held scan or priority channel if Talkback
Scan is enabled, or the Priority 1 channel if TX on PR1 is enabled. To
alert the user that the radio is in Unit-To-Unit Mode, a beep will
periodically sound until the unit is returned to normal Operating Mode.
If the RTX channel’s Digital Squelch Mode is set to ‘selective’, the
radio will accept group calls, correctly addressed Unit-To-Unit calls,
and if RX Mode is set to mixed, analog signals.
When a correctly addressed Unit-To-Unit call is received, the radio will
beep twice. If the calling unit’s ID matches one of the Call List IDs, the
associated label will be displayed along with the RX and phone icon.
Otherwise, the numeric ID will be displayed along with the RX and
phone icon.
If the calling unit is not the same unit displayed before the call was
received, the calling unit’s ID will be displayed for the duration of the
reception. The previously displayed ID will remain the default transmit
ID, but the interrupting ID will be captured as ‘last active’. To speak to
the interrupting caller, press the
U2U
button to make the last active ID
the new default transmit ID.
When a group call (or, if allowed, an analog signal) is received, the
radio will display the RTX channel’s label for the duration of the
reception.